Heating apparatus for street-cars



'(No Model.)

' L. K. CURLETT.

HEATING APPARATUS EUR STREET GARS.

N0.'397,898. Patented Feb. 19, 1889*.

WVESSES NA PETERS. Fhom-LRhagrnpher. Wzshngion D. C.

Status Unire traen,

Parent IIIVIS K. ("IIRILIC'II, OF CHICAGO, ILLINOIS.

srnerrcnrren foi-ming part of Letters Patent No. 397,898, dated February19, 188e.

Application filed January 8, 1889.

To @ZZ whom it may concern.-

Beit known that I, Lnwrs K. CURLETT, citizen ot the United States,.residing at Chicago, in the county ot' Cook and State of Illinois, haveinvented certain new and useful Improvements in I-Ieating Apparatus t'orStreet-Cars; and I do declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same, referencebeing had to the accompanying drawings, and to the letters and iiguresof reference marked thereon, which torm a part of this specification.

This invention relates to cardieaters in which the agency of circulatingheated water is utilized for the transmission and dissemination of heatthrough a car, and more particularly to that class of devices which areknown as pendent heaters, and in which the combustion-chamber isarranged beneath the floor ol the car; and it has for its object toprovide a simple, effective, and inexpensive device in which thecharring and burning of the car-floor at the place where thecombustion-chamber is attached shall be absolutely prevented.l

The invention consists in the improved construction of thecombustion-chamber and manner of attaching it to the car, whereby coolair shall be introduced between the heated metal and the wood-work ofthe car, as will be hereinafter described, and pointed out in theclaims.

In the drawings, Figure l is a transverse section of a car having myinvention applied thereto, parts being removed so as to show theinvention more clearly. Fig. 2 is a sectional view of thecombustion-chamber and part of the licor of the car. Fig. 3 is aperspective detail view oi a portion ot' the supportingrings. Fig. l isa detailview showinga modi- Iication of the same.

The same letters refer to the same parts in all the tgures.

A designates the combustion -chamben which consists of a bex, usuallyconstructed in a rectangular shape, the walls et' said box beingindicated by letters L Il. This box is surrounded by a jacket or easing,K, of such dimensions as to leave an air-space, R, between its walls andthose of the inner box. The bot- Serial No. 295,734. (Noinodel.)

tom consists, when coal is the [fuel to be employed, ot a grate, M, ot'such dimensions as to extend slightly beyond the walls oi' the outercasin g, an d said bottom is connected by bolts N, extending verticallythrough the airspace R, with the top plate, t), which extends beyond thewalls of the outer jacket or casing, so as to form a circumferentialflange, S, as will be seen in Fig. Q, t'or the purpose of supporting thedevice in position for operation. The bottom and top plate will beprovided with grooves G' to seat the upper and lower edges of the wallsof the casings.

I represents the cai.'-lioor, which has an opening of proper size andshape to admit the outer jacket or easing, K. Resting upon the car-loor,surrounding said outer casing, are a pair oisupporting rings or guards,P P', the adjoining faces ot` which are provided with studs orprojections p p', whose apices abut against each other, thus forming thesmallest possible point-s ot contact, and enabling air to circulatetreelybetween said guards, which in turn support the combustion-Chamberby the flange S of the top plate of the latter resting on the upperguard-ring. This construction absolutely prevents the intense heat fromthe metal of the combuStien-chamber from being transmitted in suchpoweror volume as to burn or char the Hoor of the car.

In Fig. Al I have shown a modification in the construct-ion of theguard-rings P P', which consists in simply making said guard-rings ofcorrugated metal, the apices et t-he corrugations being placed incontact with each other, so as to diminish the transmission of heat andallow the free circulation of air in the manner already described.

The bottom M is provided with openings T, communicating with air-spaceR, and the top plate has corresponding openings, T', thus admitting et'the passage or circulation of cold air, which, however, before beingdischarged into the car, becomes sufiiciently heated by contact with theheated walls of the combustion-chamberto assist in heating as well asVentilating the car, while the steady current prevents overheating otthe metal parts adjoining the wood-work.

The under side of the betteln M is provided with parallel angular cleatsV V, adapted to support a removable sliding ash-pan, W,

IOO

(Shown in dotted lines in lli whieh, when the ear is housed, may beplaeed in position to prevent tire and ashes from dropping' out.

The top O ot' the eoinbuation-ehamber has an opening', X, provided witha removable eover, Y, lor the admission ol luel. A pipe, l also extendsVlroni the top (l through the rar and thrmle'h the rooti' olil thelatter to Carry ol'l the product@l ot' eom'hustion. Said smoke pipe isprovided inside the ear with a proteet .ing jacket or guard, (shown inVFig'. 1,) to prrvent persons nomine' in eontaet therewith and seorehingtheir limbs or elothen.

'l (lefs'ienates the heating-coil ol' \\'.1terpii ie, which is locatedin the eomlmstion-ehamber, and the upper end ot' whieh iS eonneeted b va pipe, E, with a water-tank, (l, suitably loeat'ed. From the lmttmnolg' Said tank extends a pipe, l), eireulating' through the ear belowand in front ot the seats, so as to lorm lootrests and liootavariners,and finally eonneetingl with the bottom ot' the heating-coil in theeombnstion -ehamber,. the top plate, (l, ol which is provided withopenine'v tor the passage of said pipes E l).

When7 instead olf coal, petroleum or other hydrocarbon oil is to be usedas fuel, a supl ply ot such oil maybe kept in a tank, (1t, Suitablyloeated n nder one ot' the car-SeatS, a pipe, ll, evtendine,` from saidtank nnder the tioor olf the ear to the eomllustion-ehamlier, where itto be Conner-.ted with a suitable burner, which, however, l have notshown in the drawings, as it does not lForm a part ol' in v presentinvention.

The operation olf this invention will be,` readily 'underStood from theforegoing' deseription, takin) in eonneetion with the drawi ings heretoannexed. Fire maintained Vin the eoml iustioirehamber to heat the watereontained in eoil B. ,Vater, by the force of gravity, tiows from thetank C through the circulatingpipe l) to the lower end of eoil ll,whence, on l'ieeoming' heated, it passes upward through Saideoil andthrough pipell into tank (l,'lrom where it'` is again witlulrawn andeireulated by pipe l).

llaving' thus deseribml my invention, l elaiml. ln a lnjndentear-heater, :L eonlhuston ehainbereoinposed otl an innereaaing, an outerjaeket, a bottom, and a top plate extending;I beyoml the walls ot' theouter jaeket, so as to .torm a eireumferential flange, said liottom andtop plate being' eonneiifted by bolts` passing thmnlgh the air-spaeebetween the inner and outer easings, Substantially as lQet forth.

2. ln a pendent earlleater, a emnbustionchamber composed of an innereasing', an outer jacket, a bottom, and a top plate extending,x beyondthe walls ol" the outer jacket, so as to t'orm a eireuinferentialflange, the whole eonneeted by bolt;S,aS deseribed, Said bottom and topplate beingl provided with ojeningsreg istering with the air-spaeebetween the inner Casing' and outer jaeket, in eombiilation with a pairoli' sumn'lrting rings or `e'uarda tiltingI around the outer jaeketunder the thuige ot' the top plate, and provided with stud`orrorrug'z'itions, the :ipiees olf whit-h are placed in eontaet,substantially as and lor the purpose set forth.

ln testimonywhereof l'attix mysignature in presenee ot' two witnesses.

